FIEST SERIES NO. 43 FEBEUARY 15, 1921 



UNIVERSITY OF IOWA 

 STUDIES 



STUDIES IN NATURAL 

 HISTORY 



VOLUME IX NUIMBER ^ ^ 



THE HESPERIOIDEA OF 



AMERICA NORTH 



OF MEXICO 



by 



ARTHUR WARD LINDSEY 



PUBLISHED BY THE UNIVERSITY, IOWA CITY 



Issued monlhly throughout the year. Entered at the post office at Iowa City, Iowa, 



as second class matter. Acceptance for mailing at special rates of postage provided 



for in section 1103, Act of October 3, 1917. authorized on July 3, 1918. 



